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#1
06-24-2016, 10:40 PM
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4.4L 6 speed auto maintenance
Good day all!!
I know I have to finish the motor part of my project, but I was getting the Trans failsafe message and I couldn't go far from the house without it taking hold. Limping back home in third gear is not all that much fun... So, I decided to tear into the issue a little... The shifter doo-hicky thing that tells the Trans computer what gear it's in, is not like all the others before it... I searched for the part and now know why it isn't avail... It is literally apart of the valve body inside the trans... This one is hall effect with a magnet slider (so it seems)... So, here is the story... Here she is!! In all her high stance due to me filling the suspension manually by jumpering the air control coils and manually operating the air pump... BUT, it's not sitting on the bump stops!!! And, to my surprise, all the air bags are holding!!  Here is the color of the trans fluid at 164160 exact miles... I know that because I just changed the first oil fill after initial start...    There is ALWAYS one that doesn't cooperate!!!  Dirty pan...  Original filter... I know that cause it has a date on it...  Don't let this seal stay in the trans... It does sometimes... Mine almost did...  And the fun stuff!! With the fluid looking this bad, I wanted to clean out the valve body... I'm one of those that feel the risk is worth it have clean oil in there... But, I clean out the crap that will otherwise ruin the trans if left alone...  Gotta pull that little leaver down to release the electrical connector extension housing...  There are ten Torx 40's (seven long and three short) to drop the valve body... The other torx bolts are 27's...   These are the main long seven... The other three are in the black plastic electrical housing...   Think this is the reason I would loose my gear when it heated up... This was all over my selector slider piece...  All clean...  Oh, that thingy you pull down to release the connector extension won't go back up unless the extension piece is in place first...  You take these out and the electrical part comes off the valve body... you can't take it apart... I kinda tried, but it wasn't worth the risk of breaking it...   Pull these out (27's also) to get the solenoids out...   The middle yellow one doesn't have any removable valves behind it... Yep, I pulled all them out too...  Initial separation was very dirty!! Poor lighting... My apologies!!  So, here are the check valves for this one... and the two spring plungers... There are other plugs along the side that I didn't circle... I have a pic of them too...  Here are the valves for the shorter half (top half as it sits in the trans)... Three on one side... Two on the other...   Skip that third spot... Nothing there...  exploded view...  This is the other side... The last one gave me problems... (There is ALWAYS one!!!)   ONLY ODD ONE!!!   All back together...   Not in yet... Ran out of time... Gotta work tomorrow... I need to get the fluid, gasket, and filter... Was looking up the specs on the correct fluid, but I can't get a good straight answer from the posts I was reading... AFT2? Dex VI? Semi syn? Full syn?? Well that is it for now... I really hope this fixes my fail safe program!! If not, I will be stuck buying a valve body... Or dig into the electrical plastics... Cheers!!
__________________
2001 E53 X5 4.4i (03-07-2001 build date) White exterior / hellbeige interior (6MT swap vehicle - Manny) 2002 E53 X5 4.6is (12-20-2001 build date) Imola Red exterior / M-texture interior (Red) 2003 E53 X5 4.4i (06-26-2003 build date) Silver exterior / Black interior (Silvester II) 2008 Mini Cooper S ragtop (04-17-2008 build date) Dark Silver exterior / Gray interior ( Topless) BMWCCA member (#4745) Last edited by williamx5; 06-24-2016 at 10:54 PM. 
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#2
06-24-2016, 11:47 PM
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Awesome!
This should be a sticky! Thanks for a very detailed steps and pics are really helpful!  No issues on mine yet but would be helpful later on.
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#3
06-25-2016, 08:28 PM
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Quote:
Cheers!! Quote:
Oh my goodness!! All I did today is research this LG6!! There are a number of questionable alternatives... Shell 1375.4 that I think is no longer made... Mercon SP... Amsoil makes a close version... Redline D4... BUT, in the end, I think the ZF LG6 or OEM BMW stuff is the way to go... Oh, I don't mind saving 18 bucks a quart (times 12 quarts), but if it doesn't work, what did I really save?! Thanks again!! Quote:
Thanks again!! Quote:
Quote:
Good luck!! Thanks for tuning in!!! Waiting on parts and such now... Cheers all!!
__________________
2001 E53 X5 4.4i (03-07-2001 build date) White exterior / hellbeige interior (6MT swap vehicle - Manny) 2002 E53 X5 4.6is (12-20-2001 build date) Imola Red exterior / M-texture interior (Red) 2003 E53 X5 4.4i (06-26-2003 build date) Silver exterior / Black interior (Silvester II) 2008 Mini Cooper S ragtop (04-17-2008 build date) Dark Silver exterior / Gray interior ( Topless) BMWCCA member (#4745)
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#5
06-25-2016, 08:25 AM
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Quote:
Herer's a video on rebuilding a valve body for the 6 speed ZF ytranny. https://www.youtube.com/watch?v=ld3Dlu4kp_g If I was going through all the trouble to rebuild a 6 speed ZF tranny I would have also replaced the bushings. https://www.youtube.com/watch?v=qPeAT6wB7hU
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2006 Infiniti G35 2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD Lotus Europa 1970 Destroyed by fire Lotus Europa 1970 S2 Renault Powered Lotus Type 52 1970 Twincam Webers Powered PORSCHE 911 Targa 1982 The Garage Queen Audi Avant donated to Kars for Kids BMW 525IT Sold Audi 4000CS Quattro Sold Jensen Healey Lotus Powered Sold Opel 1900 Sold Triumph Spitfire 1971 Sold Triumph Spitfire 1968 Sold Plymouth "Cuda" 340 Six pack SOLD
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#6
06-25-2016, 06:54 PM
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Amazing.
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2001 E53 X5 3.0 Auto. Silver Black Build date 10-17-2000 141kmiles 2004 E60 545i Sport 6MT. Black/Black Build Date 6-2004 102k miles
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#7
06-25-2016, 06:57 PM
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Great step by step thread. Something I may have to address in the not too distant future, as third gear slams when accelerating about 60% throttle (I'm used to it now, so avoid trans fail safe mode). I believe it may be down to sticky valve/s as it's slowly getting worse...
This is not something I've ever done before, but with your photos and steps, it looks like something I could tackle. Definitely need to make this a sticky!
__________________
 08/06 build 4.4i Stirling Grey over black
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#8
06-25-2016, 10:45 PM
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William, anytime!
Yes, not much options for fluids, and with all the hard work you put into it better safe than sorry IMO. Upallnight, that's good info, hope the OP wont have to go that far as I imagine it will be expensive!
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04 X5 3.0i auto 03 X5 4.6is
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#10
06-28-2016, 05:27 PM
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 To the OP... STONES! BIG, BIG STONES! I am ordering a few parts today and will be using this as a reference for cleaning my 4.4 valve body! I am thanking you in advance! But I just can't imagine diving in on my own like you did... You sir have STONES! BIG, BIG STONES!  
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Vancouver, WA 2005 4.4i (LV12368) on Style 87's in summer and Studded Style 130's in winter. 1997 M3/4/5 (EE05340) W/ Vaders, Hella Xenon's, Chromline, DSII's in Summer, Contours on studless snows in winter. 
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